CN115673438B - Positioning production device and method for outer tube column casing of automobile steering gear - Google Patents
Positioning production device and method for outer tube column casing of automobile steering gear Download PDFInfo
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- CN115673438B CN115673438B CN202211436769.9A CN202211436769A CN115673438B CN 115673438 B CN115673438 B CN 115673438B CN 202211436769 A CN202211436769 A CN 202211436769A CN 115673438 B CN115673438 B CN 115673438B
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Abstract
The invention relates to the steering gear processing field, in particular to an automobile steering gear outer tube column casing positioning production device, which comprises a base, a tapping mechanical arm and two tube column holders, wherein a tube tail clamping rotating assembly and an outer tube support clamping assembly are further arranged on the base, the tube tail clamping rotating assembly is arranged on the base in a sliding mode and comprises a rotatable claw disc, positioning fingers are formed on the claw disc, the outer tube support clamping assembly comprises a first clamping mechanism and a second clamping mechanism, a clamping output end of the first clamping mechanism is fixedly connected with the tube tail clamping rotating assembly through a connecting rod, a tube end holder is further arranged between the first clamping mechanism and the second clamping mechanism, a push plate is arranged on the tube end holder, a support column is arranged on the first clamping mechanism, and an eccentric cam is arranged on the second clamping mechanism.
Description
Technical Field
The invention relates to the steering gear processing field, in particular to an automobile steering gear outer tube column casing positioning production device and a production method thereof.
Background
The steering gear is used for properly converting the steering torque and the steering angle from the steering wheel (mainly reducing and increasing the torque) and outputting the converted steering torque and the converted steering angle to the steering rod mechanism so as to steer the automobile, and is essentially a speed reducing transmission device. There are various types of steering gears, such as rack and pinion type, recirculating ball type, worm crank finger type, power steering gears, etc.
The processing of the outer tube of the steering gear is generally carried out through casting molding of a die, then secondary tapping processing is carried out, tapping operation is carried out on a reserved hole in a middle shell of the outer tube of the steering gear in the process, the structure diagram of a column casing of the outer tube of the steering gear is shown in fig. 1, the shell in the middle of the outer tube of the steering gear is provided with two mounting planes A and B, the A plane is used for being filled with a steering rod, the B plane is used for being filled with an elastic pin, the two mounting planes are assembled with other part shells through bolts in the follow-up process, the existing processing mode is to design two sets of fixture tools, one set of fixture is used for clamping the outer shell of the steering gear in an A face up state, the other fixture is used for clamping the outer shell of the steering gear in a B face up state, the traditional mode needs that the outer shell of the steering gear needs to be frequently switched between two sets of fixture supplies, and the efficiency is extremely low.
The technical difficulty of combining two clamping tools is that as the bracket which is used for being fixedly connected with the automobile body is welded on the steering gear shell in advance, the structural design of the bracket is subjected to strict mechanical analysis and then is subjected to flanging treatment so as to strengthen the structural strength, and the flanging of the bracket is interfered with the clamp in the switching process of the two states, so that the switching process is difficult.
Disclosure of Invention
Based on the above, it is necessary to provide an apparatus and a method for positioning and producing an outer tube column casing of an automobile steering gear.
In order to solve the problems in the prior art, the invention adopts the following technical scheme:
the utility model provides an automobile steering device outer tube column casing location apparatus for producing, includes base and sets up tapping arm and two tubular column supports on the base, and two tubular column supports interval distribution are used for carrying out horizontal support and centre gripping to steering device outer tube column casing on the base, still be provided with pipe tail centre gripping rotary component and outer tube support centre gripping subassembly on the base;
the pipe tail clamping and rotating assembly is arranged on the base in a sliding manner and comprises a claw disc which is sleeved at one end of the outer pipe column casing of the steering gear and can rotate, the claw disc drives the outer pipe column casing of the steering gear to rotate in a rotating manner, and positioning fingers which are used for extending into end grooves of the outer pipe column casing of the steering gear are formed on the claw disc;
the outer pipe support clamping assembly comprises a first clamping mechanism and a second clamping mechanism, wherein the first clamping mechanism is used for clamping the outer pipe support when the surface A of the outer pipe column casing of the steering gear faces upwards, and the second clamping mechanism is used for clamping the outer pipe support when the surface B of the outer pipe column casing of the steering gear faces upwards;
the clamping output end of the first clamping mechanism is fixedly connected with the pipe tail clamping rotating assembly through a connecting rod, and the first clamping mechanism can drive the pipe tail clamping rotating assembly to translate along with the connecting rod in the clamping and expanding processes;
a cylinder end support for supporting the end part of the outer cylinder of the steering gear is arranged between the first clamping mechanism and the second clamping mechanism, and a push plate capable of synchronously translating along with the connecting rod and pushing the outer cylinder of the steering gear is arranged on the cylinder end support so as to enable the outer cylinder bracket to withdraw from the first clamping mechanism;
the first clamping mechanism is provided with a support column for supporting the lower edge of the outer pipe support when the A face of the outer pipe column casing of the steering gear is processed;
the second clamping mechanism is provided with an eccentric cam which can rotate and keep locked, and the eccentric cam is used for supporting and limiting the outer pipe bracket when the claw disc drives the outer pipe column of the steering gear to rotate upwards from the surface A to the surface B.
Further, the first clamping mechanism and the second clamping mechanism each include:
the first cylinder is fixedly arranged on the base through a first upright post, the top of the first upright post is fixedly connected with a cylinder mounting seat, one end of the cylinder mounting seat is hinged with an H connecting rod, the first cylinder is fixedly connected to one side of the cylinder mounting seat, and an output shaft of the first cylinder and the H connecting rod are both positioned on the same side of the cylinder mounting seat;
one end of the pressing rod is hinged with the output shaft of the first cylinder, and the middle part of the pressing rod is hinged with the free end of the H connecting rod;
the locating pin is fixedly arranged above the base through the second upright post, and a locating block for inserting the locating pin is fixedly connected to one side of the pressing rod.
Further, the support column is fixedly arranged on the base and positioned below the compression rod, and one side of the top of the support column is fixedly connected with an extension support plate for lifting the outer tube support;
a third upright post is arranged beside the second upright post, a compression block is fixedly arranged at the upper end of the third upright post, an avoidance groove for avoiding the bending edge of the outer tube support is formed in the side wall of the compression block, and one side of the free end of the compression rod is fixedly connected with a back side clamping block which is matched with the compression block to jointly clamp the outer tube support;
the locating block in the first clamping mechanism is arranged close to the middle of the pressing rod.
Further, the positioning block of the second clamping mechanism is arranged at the free end of the pressing rod, the eccentric cam is arranged on the second upright post of the second clamping mechanism, one end of the eccentric cam is provided with a threaded rod penetrating through the second upright post, and the threaded rod is screwed with a first nut which is used for locking the eccentric cam on the second upright post.
Further, a fourth upright post is fixedly arranged beside the third upright post, the fourth upright post is positioned below the first clamping mechanism, a movable frame capable of transversely moving is movably arranged on the fourth upright post, the movable frame consists of two mutually parallel side plates and two connecting shafts, the same ends of the two side plates are respectively fixedly connected through the connecting shafts, the two side plates are respectively positioned at two sides of the fourth upright post, and the two connecting shafts movably penetrate through the fourth upright post;
the side plate far away from the pipe tail clamping and rotating assembly is provided with a strip-shaped connecting plate fixedly connected to the push plate;
the side plate close to the pipe tail clamping and rotating assembly is provided with a connecting piece used for being connected to a connecting rod, the side plate is also provided with an extension bracket, the end part of the extension bracket is formed with an adapter plate positioned below the free end of the compression rod, the adapter plate is formed with a waist hole, and the lower end of the compression rod is provided with a limit bolt which is connected with the waist hole in a sliding mode;
two springs are arranged between the fourth upright post and one side plate far away from the compression rod, and the two springs are respectively sleeved on the two connecting shafts.
Further, the connecting rod comprises pole body and pole cover, the pole body is located in the pole cover through the screw thread soon, the tip of pole cover with connecting piece coupling, the one end of pole body passes through the screw thread and links to each other with the rotatory subassembly of pipe tail centre gripping, two second nuts have been screwed respectively at the both ends of pole body, and two second nuts support tight pole cover and the rotatory subassembly of pipe tail centre gripping respectively.
Further, the pipe tail clamping and rotating assembly further comprises:
the base is provided with a sliding rail used for connecting the supporting platform, and the bottom of the supporting platform is connected with the sliding rail through a plurality of sliding blocks;
the sliding table is movably arranged at the top of the supporting platform, a wedge-shaped sliding bar for connecting the sliding table is arranged at the top of the sliding table, and the wedge-shaped sliding bar is consistent with the length direction of the sliding rail;
the second cylinder is fixedly arranged at the top of one end, far away from the connecting rod, of the supporting platform in a horizontal state, and an output shaft of the second cylinder is fixedly connected with the sliding table;
the rotating mechanism is fixedly arranged on the sliding table, and the claw disc is connected with the rotating output end of the rotating mechanism.
Further, the rotation mechanism includes:
the motor is horizontally arranged and fixedly arranged on the sliding table through a vertical seat;
the shaft seat is fixedly arranged on the sliding table, a concentric shaft is formed on the back side of the claw disc, and the concentric shaft is connected with the shaft seat;
and the far end of the concentric shaft and the output shaft of the motor are fixedly connected with synchronous wheels connected through synchronous belts.
Further, a compressing cylinder for compressing the outer tube column casing of the steering gear on the column support is fixedly arranged at the side of each column support.
The production method of the outer tube column casing positioning production device of the automobile steering gear comprises the following steps:
s1: before machining, positioning and calibrating the B-surface machining are carried out, an outer tube column casing of the steering gear is placed on two tube column supports, an outer tube support is placed between a pressing rod and a positioning pin column of a second clamping mechanism in the process, then the outer tube column casing of the steering gear is held and pushed towards the direction of the cylinder end support, in the process, the outer tube column casing of the steering gear is manually rotated, so that the positioning hole at the end part of the outer tube support can be just sleeved on the positioning pin column of the second clamping mechanism, and the second clamping mechanism is started to clamp the outer tube support;
s2: when the second clamping mechanism clamps the outer tube support, the eccentric cam is rotated to be adjusted to a state of abutting against the edge of the outer tube support, then the eccentric cam is locked to lock the current state of the eccentric cam, and then the second clamping mechanism is loosened to finish the positioning and calibrating process of B-surface machining;
s3: the method comprises the steps of batch production, placing an outer tube column casing of a steering gear on two tube column supports through a mechanical arm, adjusting the orientation of the outer tube column casing of the steering gear through the mechanical arm, enabling an outer tube support to be in lap joint with a support column of a first clamping assembly, enabling an A face of the outer tube column casing of the steering gear to face upwards, clamping the outer tube support through a first clamping mechanism, pulling a tube tail clamping rotating assembly to be close to a tube tail of the outer tube column casing of the steering gear through a connecting rod in the clamping process of the first clamping mechanism, and enabling the tube tail clamping rotating assembly to extend out of a claw disc to be in sleeve joint with a groove at the tail of the outer tube column casing of the steering gear;
s4: drilling holes on the A surface of the outer column casing of the steering gear is sequentially completed through the tapping mechanical arm;
s5: the first clamping mechanism loosens the outer tube bracket, the tube tail clamping rotating assembly is pushed by the connecting rod in the process, meanwhile, the outer tube bracket is transversely withdrawn from the first clamping mechanism by the push plate, then the claw disc is driven by the tube tail clamping rotating assembly to rotate, the claw disc drives the outer tube column casing of the steering gear to rotate, the outer tube bracket stops rotating until the outer tube bracket contacts the eccentric cam, and the second clamping mechanism acts to clamp the outer tube bracket again;
s6: b-side drilling of the outer column casing of the steering gear is sequentially completed through the tapping mechanical arm;
s7: the second clamping assembly loosens the outer tube support, then the tube tail clamping rotating assembly drives the claw disc to withdraw from the tail of the outer tube column casing of the steering gear, and after the machined outer tube column casing of the steering gear is taken away by the mechanical arm, the next machining cycle is repeated.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, two clamping states are integrated in one set of clamp tool, so that the steering gear shell can realize rotation switching of two processing surfaces without replacing the clamp tool, the device clamps and fixes the bracket of the steering gear shell at positions of different processing states to realize state switching of the surface A or the surface B, and meanwhile, in the process of switching from the surface A to the surface B, the front end clamp and the rear end clamp are connected into a whole through the structure of the connecting rod and the like, so that the outer tube column casing of the steering gear can be safely pulled away from the front end clamp in the loosening process of the front end clamp, and the interference problem in the process of switching from the surface A to the surface B is solved.
Drawings
FIG. 1 is a schematic perspective view of an outer column casing of an automotive steering gear;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic perspective view of a second embodiment of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic perspective view of an outer tube bracket clamping assembly;
FIG. 6 is an enlarged schematic view of the structure at A1 in FIG. 5;
FIG. 7 is a schematic perspective view of a second embodiment of an outer tube bracket clamping assembly;
FIG. 8 is an enlarged schematic view of the structure at A2 in FIG. 5;
FIG. 9 is a schematic perspective view of a first clamping mechanism;
FIG. 10 is an exploded perspective view of the first clamping mechanism;
FIG. 11 is a schematic exploded view of a first clamping mechanism;
FIG. 12 is a schematic perspective view of a column holder and a hold down cylinder;
FIG. 13 is a schematic perspective view of a tube end clamping and rotating assembly;
FIG. 14 is a schematic diagram of a second perspective view of a tube end clamping and rotating assembly;
the reference numerals in the figures are: 1-an outer steering gear column casing; 2-a bracket; 3-positioning holes; 4-a base; 5-tapping mechanical arms; 6-a pipe column support; 7-clamping the rotary component by the pipe tail; 8-an outer tube holder clamping assembly; 9-claw disk; 10-positioning fingers; 11-a first clamping mechanism; 12-a second clamping mechanism; 13-connecting rods; 14-a barrel end support; 15-pushing plate; 16-support columns; 17-eccentric cams; 26-extending the support plate; 27-a third upright; 28-a compaction block; 29-avoiding grooves; 30-a backside clamping block; 31-a threaded rod; 32-a first nut; 33-fourth upright; 34-a movable frame; 36-connecting shaft; 37-a strip-shaped connecting plate; 38-a connector; 39-extending a stent; 40-an adapter plate; 41-waist holes; 42-limiting bolts; 43-spring; 44-shaft; 45-bar sleeve; 46-a second nut; 47-a support platform; 48-sliding rails; 49-slide block; 50-sliding table; 51-wedge slides; 52-a second cylinder; 53-motor; 54-standing seats; 55-shaft seat; 56-concentric axis; 57-synchronous belt; 58-synchronizing wheel; 59-compressing air cylinder; 60-grooves.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 2 to 14, an automobile steering gear outer tube column casing positioning production device comprises a base 4, a tapping mechanical arm 5 and two tube column supports 6, wherein the tapping mechanical arm 5 and the two tube column supports 6 are arranged on the base 4, the tapping mechanical arm 5 is used for completing tapping operation of a surface A and a surface B of the steering gear outer tube column casing 1, the two tube column supports 6 are distributed on the base 4 at intervals and are used for horizontally supporting and clamping the steering gear outer tube column casing 1, and a tube tail clamping rotating assembly 7 and an outer tube support 2 clamping assembly are further arranged on the base 4;
the pipe tail clamping and rotating assembly 7 is arranged on the base 4 in a sliding manner and comprises a claw disc 9 which is sleeved at one end of the outer pipe column casing 1 of the steering gear and can rotate, the claw disc 9 drives the outer pipe column casing 1 of the steering gear to rotate in a rotating manner, and a positioning finger 10 which is used for extending into an end groove of the outer pipe column casing 1 of the steering gear is formed on the claw disc 9; the pipe tail clamping and rotating assembly 7 can push the claw disc 9 to the tail of the outer pipe column casing 1 of the steering gear so as to enable the claw disc 9 to be sleeved on the pipe tail clamping and rotating assembly, and in the process, the positioning fingers 10 on the claw disc 9 synchronously extend into the grooves, so that the claw disc 9 can rotate together with the outer pipe column casing 1 of the steering gear.
The outer pipe bracket 2 clamping assembly comprises a first clamping mechanism 11 and a second clamping mechanism 12, wherein the first clamping mechanism 11 is used for clamping the outer pipe bracket 2 when the A face of the outer pipe column casing 1 of the steering gear faces upwards, and the second clamping mechanism 12 is used for clamping the outer pipe bracket 2 when the B face of the outer pipe column casing 1 of the steering gear faces upwards; because the screw tap of the tapping mechanical arm 5 works vertically, the outer tube column casing 1 of the steering gear needs to be clamped when the surface A and the surface B are respectively vertical upwards and vertical to the screw tap, so that the tapping process can be smoothly carried out.
The clamping output end of the first clamping mechanism 11 is fixedly connected with the pipe tail clamping and rotating assembly 7 through a connecting rod 13, and the first clamping mechanism 11 can drive the pipe tail clamping and rotating assembly 7 to translate along with the connecting rod 13 in the clamping and opening processes;
a cylinder end support 14 for supporting the end of the outer tube column 1 of the steering gear is arranged between the first clamping mechanism 11 and the second clamping mechanism 12, and a push plate 15 capable of synchronously translating along with the connecting rod 13 and pushing the outer tube column 1 of the steering gear is arranged on the cylinder end support 14 so as to withdraw the outer tube bracket 2 from the first clamping mechanism 11; the push plate 15 is driven to translate by the displacement generated when the claw ends of the first clamping mechanisms 11 are released, so that the diverter outer tube column casing 1 positioned in the tube end support 14 is pushed backwards by the push plate 15, and the outer tube support 2 is moved backwards to withdraw from the first clamping mechanisms 11, so that in the subsequent rotation process, friction or impact occurs between the support 2 and the first clamping mechanisms 11.
The front first clamping mechanism 11 and the rear pipe tail clamping rotating assembly 7 are connected into a whole through the connecting rod 13, and when the push plate 15 pushes the steering gear outer pipe column casing 1 to move backwards, the pipe tail clamping rotating assembly 7 also moves the claw disc 9 backwards through the synchronous belt 57 so as to prevent the claw disc 9 from preventing the backward withdrawing process of the outer pipe bracket 2 in situ.
The first clamping mechanism 11 is provided with a support column 16 for supporting the lower edge of the outer pipe bracket 2 when the A surface of the outer pipe column casing 1 of the steering gear is processed; when the outer tube column casing 1 of the steering gear is placed on the column support 6, the mechanical arm needs to adjust the direction of the outer tube column casing 1 so that the outer tube support 2 is put on the support column 16, at this time, the outer tube support 2 is in place and the A faces upwards, and the first clamping mechanism 11 acts to clamp and fix the outer tube support 2.
The second clamping mechanism 12 is provided with an eccentric cam 17 which can rotate and keep locked, and the eccentric cam 17 is used for supporting and limiting the outer tube bracket 2 when the claw disk 9 drives the outer tube column 1 of the steering gear to rotate upwards from the surface A to the surface B; when the outer tube bracket 2 is withdrawn from the first clamping mechanism 11, the claw disk 9 drives the steering gear outer tube column casing 1 to rotate, the outer tube bracket 2 rotates simultaneously until the outer tube bracket 2 contacts the eccentric cam 17, the outer tube bracket 2 is positioned and the B face upwards, and the second clamping mechanism 12 acts to clamp and fix the outer tube bracket 2.
The first clamping mechanism 11 and the second clamping mechanism 12 each include:
the first cylinder is fixedly arranged on the base 4 through a first upright post, the top of the first upright post is fixedly connected with a cylinder mounting seat, one end of the cylinder mounting seat is hinged with an H connecting rod, the first cylinder is fixedly connected to one side of the cylinder mounting seat, and the output shaft of the first cylinder and the H connecting rod are both positioned on the same side of the cylinder mounting seat;
one end of the pressing rod is hinged with the output shaft of the first cylinder, and the middle part of the pressing rod is hinged with the free end of the H connecting rod;
the locating pin is fixedly arranged above the base 4 through the second upright post, and a locating block for inserting the locating pin is fixedly connected to one side of the pressing rod.
One end of the pressing rod is pushed by the first air cylinder, the pressing rod rotates by taking the H connecting rod as a fulcrum, so that the positioning block at the other end of the pressing rod pushes the outer tube support 2 until the positioning hole 3 on the outer tube support 2 is sleeved on the positioning pin, and the positioning pin presses the outer tube support 2 on the positioning block by penetrating through the positioning hole 3.
The support column 16 is fixedly arranged on the base 4 and positioned below the compression rod, and one side of the top of the support column 16 is fixedly connected with an extension support plate 26 for lifting the outer tube bracket 2; because the outer tube support 2 can be pushed by the positioning block to translate in the clamping process, an extension support plate 26 is additionally arranged on one side of the support column 16 to support the lower edge of the outer tube support 2, and meanwhile, the transverse width of the extension support plate 26 is larger than the displacement in the clamping process of the outer tube support 2, so that the outer tube support 2 of the outer tube column casing 1 of the steering gear is prevented from falling down.
A third upright post 27 is arranged beside the second upright post, a compression block 28 is fixedly arranged at the upper end of the third upright post 27, an avoidance groove 29 for avoiding the bending edge of the outer tube support 2 is formed in the side wall of the compression block 28, and a back side clamping block 30 which is matched with the compression block 28 to jointly clamp the outer tube support 2 is fixedly connected to one side of the free end of the compression rod;
the positioning block in the first clamping mechanism 11 is arranged close to the middle of the pressing rod.
Because the holes of the A surface required to be tapped are more and relatively dispersed, the stress is also more dispersed in the tapping process, and therefore, the outer pipe bracket 2 is further tightened by additionally arranging the compression block 28 and the back side clamping block 30 in the first clamping mechanism 11, thereby further ensuring the clamping stability in the tapping process. In the process that the outer tube support 2 is clamped by the compression rod matched with the positioning pin, the back side clamping block 30 which moves together with the compression rod is contacted with and abuts against the outer tube support 2 from the rear, and is matched with the compression block 28 at the front side to clamp and fix the middle part of the outer tube support 2 together, the bent edge of the outer tube support 2 is avoided through the U-shaped avoiding groove 29 on the compression block 28 in the process, and the outer tube support 2 is required to be moved backwards before the following processing of the surface A to the surface B, so that the bent edge of the outer tube support 2 is withdrawn from the avoiding groove 29 and can rotate.
The positioning block of the second clamping mechanism 12 is arranged at the free end of the pressing rod, the eccentric cam 17 is arranged on the second upright of the second clamping mechanism 12, one end of the eccentric cam 17 is provided with a threaded rod 31 penetrating through the second upright, and the threaded rod 31 is screwed with a first nut 32 which is used for locking the eccentric cam 17 on the second upright.
In the process of rotating the outer tube column 1 of the steering gear from the A face upwards to the B face upwards, in order to ensure that the outer tube support 2 is stopped by the eccentric cam 17, the positioning hole 3 is just coaxial with the positioning pin, so that the eccentric cam 17 needs to be arranged in an adjustable mode, a pre-positioning calibration process before machining can be performed, the positioning pin can be inserted into the positioning hole 3 by rotating the eccentric cam 17 to ensure that the eccentric cam 17 is in contact with the outer tube support 2, and finally the current state of the eccentric cam 17 is kept by locking the first nut 32.
A fourth upright post 33 is fixedly arranged beside the third upright post 27, the fourth upright post 33 is positioned below the first clamping mechanism 11, a movable frame 34 capable of transversely moving is movably arranged on the fourth upright post 33, the movable frame 34 consists of two parallel side plates and two connecting shafts 36, the same ends of the two side plates are respectively fixedly connected through the connecting shafts 36, the two side plates are respectively positioned at two sides of the fourth upright post 33, and the two connecting shafts 36 movably penetrate through the fourth upright post 33;
wherein, a strip-shaped connecting plate 37 fixedly connected to the push plate 15 is arranged on the side plate far away from the pipe tail clamping and rotating assembly 7;
the side plate close to the pipe tail clamping and rotating assembly 7 is provided with a connecting piece 38 for connecting to the connecting rod 13, the side plate is also provided with an extension bracket 392, the end part of the extension bracket 392 is provided with an adapter plate 40 positioned below the free end of the compression rod, the adapter plate 40 is provided with a waist hole 41, and the lower end of the compression rod is provided with a limit bolt 42 which is slidably connected with the waist hole 41;
two springs 43 are arranged between the fourth upright post 33 and one side plate far away from the pressing rod, and the two springs 43 are respectively sleeved on the two connecting shafts 36.
In the process of clamping the outer tube bracket 2 by the compression rod of the first clamping mechanism 11, the free end of the compression rod is in sliding fit with the waist hole 41 on the lower adapter plate 40 through the limit bolt 42 at the bottom, and is converted into translational motion of the movable frame 34 on the fourth upright post 33, so that the movable frame 34 drives the push plate 15 to translate, and meanwhile, the movable frame 34 is connected with the tube tail clamping rotating assembly 7 into a whole through the connecting rod 13, so that the tube tail clamping rotating assembly 7, the steering gear outer tube column casing 1 and the push plate 15 synchronously move forward in the process of clamping the compression rod, the bending edge of the outer tube bracket 2 enters the avoidance groove 29 of the compression block 28, and meanwhile, the compression block 28 is matched with the back side clamping block 30 on the compression rod to jointly clamp the middle position of the outer tube bracket 2.
In the process that the pressing rod of the first clamping mechanism 11 loosens the outer tube bracket 2, the limit bolt 42 at the bottom of the free end slides in the waist hole 41, so that the adapter plate 40 and the extension bracket 392 are driven to move, and the extension bracket 392 is fixedly connected with the movable frame 34, so that the movable frame 34 drives the push plate 15 to abut against and push the small end of the outer tube column casing 1 of the steering gear through the strip-shaped connecting plate 37, and meanwhile, the movable frame 34 pushes the tube tail clamping and rotating assembly 7 backwards through the connecting rod 13, so that the synchronous backward movement of the push rod, the outer tube column casing in the transformation period and the tube tail clamping and rotating assembly 7 is realized, and the bending edge of the outer tube bracket 2 can be completely withdrawn transversely from the avoidance groove 29 on the pressing block 28.
The connecting rod 13 is composed of a rod body 44 and a rod sleeve 45, the rod body 44 is arranged in the rod sleeve 45 in a screwed mode, the end portion of the rod sleeve 45 is connected with the connecting piece 38 in a shaft mode, one end of the rod body 44 is connected with the pipe tail clamping and rotating assembly 7 through threads, two second nuts 46 are screwed at two ends of the rod body 44 respectively, and the two second nuts 46 respectively abut against the rod sleeve 45 and the pipe tail clamping and rotating assembly 7.
In order to be able to adapt to different diverter housings with different lengths, the connecting rod 13 is arranged in a length-adjustable mode, the whole length of the connecting rod 13 is adjusted by screwing the rod body 44 and the rod sleeve 45, the locking of the current length of the connecting rod 13 is completed by locking one second nut 46, and the fastening connection of the rod body 44 and the pipe tail clamping and rotating assembly 7 is realized by locking the other second nut 46.
The pipe tail clamping and rotating assembly 7 further comprises:
the base 4 is provided with a sliding rail 48 for connecting the supporting platform 47, and the bottom of the supporting platform 47 is connected with the sliding rail 48 through a plurality of sliding blocks 49;
the sliding table 50 is movably arranged at the top of the supporting platform 47, a wedge-shaped sliding bar 51 for connecting the sliding table 50 is arranged at the top of the sliding table 50, and the wedge-shaped sliding bar 51 is consistent with the length direction of the sliding rail 48;
the second air cylinder 52 is fixedly arranged at the top of one end, far away from the connecting rod 13, of the supporting platform 47 in a horizontal state, and an output shaft of the second air cylinder 52 is fixedly connected with the sliding table 50;
the rotating mechanism is fixedly arranged on the sliding table 50, and the claw disc 9 is connected with the rotating output end of the rotating mechanism.
In order to prevent the outer tube column casing 1 of the steering gear from colliding with the claw disk 9 in the process of being placed on the column support 6, the tube tail clamping and rotating assembly 7 is set to be a double sliding mechanism, the first layer of sliding, namely the supporting platform 47, can slide on the base 4, and the supporting platform 47 is connected with the movable frame 34 into a whole through the connecting rod 13, so that the synchronous forward movement and the synchronous backward movement brought by the action of the first clamping mechanism 11 are realized;
the second layer of sliding, that is, the sliding table 50 can be pushed by the second air cylinder 52 to translate on the supporting platform 47, when the mechanical arm places the outer tube column casing 1 of the steering gear on the tube column support 6, the second air cylinder 52 drives the claw disc 9 on the sliding table 50 to retract, so that interference between the tail of the outer tube column casing 1 of the steering gear and the claw disc 9 is avoided, when the outer tube column casing 1 of the steering gear is completely placed on the tube column support 6, and the outer tube support 2 is also put on the extending support plate 26, the second air cylinder 52 pushes the sliding table 50 out, so that the positioning fingers 10 on the claw disc transversely extend into the tail grooves of the outer tube column casing 1 of the steering gear.
The rotation mechanism includes:
a motor 53 which is horizontally arranged and fixedly arranged on the sliding table 50 through a stand 54;
the shaft seat 55 is fixedly arranged on the sliding table 50, a concentric shaft 56 is formed on the back side of the claw disk 9, and the concentric shaft 56 is connected with the shaft seat 55;
wherein, the distal end of the concentric shaft 56 and the output shaft of the motor 53 are fixedly connected with a synchronous wheel 58 connected by a synchronous belt 57.
The motor 53 drives the claw disk 9 to rotate through the synchronous belt 57 and the synchronous wheel 58, so that the claw disk 9 drives the outer steering gear column casing 1 to rotate through the matching of the positioning finger 10 and the groove.
A pressing cylinder 59 for pressing the outer tube 1 of the steering gear onto the tube holder 6 is fixedly arranged beside each tube holder 6. The clamping stability of the tapping operation area is further ensured by the auxiliary pressing of the round tube part of the outer tube column casing 1 of the steering gear through the pressing cylinder 59.
A production method based on the positioning production device of the outer tube column casing 1 of the automobile steering gear according to claim 1, comprising the following steps:
s1: before machining, positioning and calibrating the B-side machining are carried out, the outer tube column casing 1 of the steering gear is placed on the two tube column supports 6, in the process, the outer tube support 2 is placed between the pressing rod and the positioning pin of the second clamping mechanism 12, then the outer tube column casing 1 of the steering gear is held and pushed towards the cylinder end support 14, in the process, the outer tube column casing 1 of the steering gear is manually rotated, so that the positioning hole 3 at the end part of the outer tube support 2 can be just sleeved on the positioning pin of the second clamping mechanism 12, and at the moment, the second clamping mechanism 12 is started to clamp the outer tube support 2;
s2: when the second clamping mechanism 12 clamps the outer tube bracket 2, the eccentric cam 17 is rotated to adjust the outer tube bracket to a state of abutting against the edge of the outer tube bracket 2, then the eccentric cam 17 is locked to lock the current state of the eccentric cam 17, and then the second clamping mechanism 12 is loosened to finish the positioning and calibrating process of B-plane processing;
s3: the outer tube column casing 1 of the steering gear is placed on two tube column supports 6 through a mechanical arm, the mechanical arm adjusts the orientation of the outer tube column casing 1 of the steering gear, the outer tube support 2 of the steering gear is overlapped on a support column 16 of a first clamping assembly, at the moment, the surface A of the outer tube column casing 1 of the steering gear faces upwards, the outer tube support 2 is clamped by the action of a first clamping mechanism 11, the first clamping mechanism 11 pulls a tube tail clamping rotating assembly 7 to be close to the tube tail of the outer tube column casing 1 of the steering gear through a connecting rod 13 in the clamping process, and then the tube tail clamping rotating assembly 7 stretches out of a claw disc 9 to be sleeved in a groove at the tail of the outer tube column casing 1 of the steering gear;
s4: drilling holes on the A surface of the outer tube column casing 1 of the steering gear is sequentially completed through the tapping mechanical arm 5;
s5: the first clamping mechanism 11 releases the outer tube bracket 2, in the process, the connecting rod 13 pushes the tube tail clamping rotating assembly 7, meanwhile, the push plate 15 also transversely withdraws the outer tube bracket 2 from the first clamping mechanism 11, then the tube tail clamping rotating assembly 7 drives the claw disc 9 to rotate, the claw disc 9 drives the steering gear outer tube column casing 1 to rotate, the rotation is stopped until the outer tube bracket 2 contacts the eccentric cam 17, and the second clamping mechanism 12 acts to clamp the outer tube bracket 2 again;
s6: b-side drilling of the outer tube column casing 1 of the steering gear is sequentially completed through the tapping mechanical arm 5;
s7: the second clamping assembly loosens the outer tube support 2, then the tube tail clamping rotating assembly 7 drives the claw disc 9 to withdraw from the tail of the outer tube column casing 1 of the steering gear, and after the machined outer tube column casing 1 of the steering gear is taken away by the mechanical arm, the next machining cycle is repeated.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides an automobile steering gear outer tube column casing location apparatus for producing, includes base (4) and sets up tapping arm (5) and two tubular column support (6) on base (4), and two tubular column support (6) interval distribution are used for carrying out horizontal support and centre gripping to steering gear outer tube column casing (1) on base (4), its characterized in that, still be provided with on base (4) tail pipe centre gripping rotary component (7) and outer tube support (2) centre gripping subassembly;
the pipe tail clamping and rotating assembly (7) is arranged on the base (4) in a sliding manner and comprises a claw disc (9) which is sleeved at one end of the outer pipe column casing (1) of the steering gear and can rotate, the claw disc (9) drives the outer pipe column casing (1) of the steering gear to rotate in a rotating manner, and a positioning finger (10) which is used for extending into an end groove of the outer pipe column casing (1) of the steering gear is formed on the claw disc (9);
the outer tube support (2) clamping assembly comprises a first clamping mechanism (11) and a second clamping mechanism (12), wherein the first clamping mechanism (11) is used for clamping the outer tube support (2) when the A face of the outer tube column casing (1) of the steering gear faces upwards, and the second clamping mechanism (12) is used for clamping the outer tube support (2) when the B face of the outer tube column casing (1) of the steering gear faces upwards;
the clamping output end of the first clamping mechanism (11) is fixedly connected with the pipe tail clamping and rotating assembly (7) through a connecting rod (13), and the first clamping mechanism (11) drives the pipe tail clamping and rotating assembly (7) to translate along with the connecting rod (13) in the clamping and opening processes;
a cylinder end support (14) for supporting the end part of the outer cylinder (1) of the steering gear is further arranged between the first clamping mechanism (11) and the second clamping mechanism (12), and a push plate (15) capable of synchronously translating along with the connecting rod (13) and pushing the outer cylinder (1) of the steering gear is arranged on the cylinder end support (14) so as to enable the outer cylinder bracket (2) to withdraw from the first clamping mechanism (11);
the first clamping mechanism (11) is provided with a support column (16) for supporting the lower edge of the outer pipe bracket (2) when the A surface of the outer pipe column casing (1) of the steering gear is processed;
the second clamping mechanism (12) is provided with an eccentric cam (17) which can rotate and keep locked, and the eccentric cam (17) is used for supporting and limiting the outer pipe bracket (2) when the claw disc (9) drives the outer pipe column casing (1) of the steering gear to rotate upwards from the surface A to the surface B.
2. An outer tube column casing positioning production device for an automotive steering gear according to claim 1, characterized in that the first clamping mechanism (11) and the second clamping mechanism (12) each comprise:
the first cylinder is fixedly arranged on the base (4) through a first upright post, the top of the first upright post is fixedly connected with a cylinder mounting seat, one end of the cylinder mounting seat is hinged with an H connecting rod, the first cylinder is fixedly connected to one side of the cylinder mounting seat, and the output shaft of the first cylinder and the H connecting rod are both positioned on the same side of the cylinder mounting seat;
one end of the pressing rod is hinged with the output shaft of the first cylinder, and the middle part of the pressing rod is hinged with the free end of the H connecting rod;
the locating pin is fixedly arranged above the base (4) through the second upright post, and a locating block for inserting the locating pin is fixedly connected to one side of the pressing rod.
3. The positioning production device for the outer tube column casing of the automobile steering gear according to claim 2, wherein the supporting column (16) is fixedly arranged on the base (4) and positioned below the pressing rod, and an extending supporting plate (26) for lifting the outer tube bracket (2) is fixedly connected to one side of the top of the supporting column (16);
a third upright post (27) is arranged beside the second upright post, a compression block (28) is fixedly arranged at the upper end of the third upright post (27), an avoidance groove (29) for avoiding the bending edge of the outer tube support (2) is formed in the side wall of the compression block (28), and a back side clamping block (30) which is matched with the compression block (28) to jointly clamp the outer tube support (2) is fixedly connected to one side of the free end of the compression rod;
the positioning block in the first clamping mechanism (11) is arranged close to the middle of the pressing rod.
4. The device for positioning and producing the outer tube column casing of the automobile steering gear according to claim 2, wherein the positioning block of the second clamping mechanism (12) is arranged at the free end of the pressing rod, the eccentric cam (17) is arranged on the second column of the second clamping mechanism (12), one end of the eccentric cam (17) is provided with a threaded rod (31) penetrating through the second column, and a first nut (32) which is used for locking the eccentric cam (17) on the second column is screwed on the threaded rod (31).
5. The positioning production device for the outer tube column casing of the automobile steering gear according to claim 3, wherein a fourth column (33) is fixedly arranged beside the third column (27), the fourth column (33) is positioned below the first clamping mechanism (11), a movable frame (34) capable of transversely moving is movably arranged on the fourth column (33), the movable frame (34) consists of two mutually parallel side plates and two connecting shafts (36), the same ends of the two side plates are respectively fixedly connected through the connecting shafts (36), the two side plates are respectively positioned at two sides of the fourth column (33), and the two connecting shafts (36) movably penetrate through the fourth column (33);
wherein, the side plate far away from the pipe tail clamping and rotating assembly (7) is provided with a strip-shaped connecting plate (37) fixedly connected to the push plate (15);
the side plate close to the pipe tail clamping and rotating assembly (7) is provided with a connecting piece (38) used for being connected to the connecting rod (13), the side plate is also provided with an extending bracket (39), the end part of the extending bracket (39) is provided with an adapter plate (40) positioned below the free end of the pressing rod, the adapter plate (40) is provided with a waist hole (41), and the lower end of the pressing rod is provided with a limiting bolt (42) which is slidably connected with the waist hole (41);
two springs (43) are arranged between the fourth upright post (33) and one side plate far away from the compression rod, and the two springs (43) are respectively sleeved on the two connecting shafts (36).
6. The positioning production device for the outer tube column casing of the automobile steering gear according to claim 5, wherein the connecting rod (13) is composed of a rod body (44) and a rod sleeve (45), the rod body (44) is arranged in the rod sleeve (45) in a screwed mode, the end portion of the rod sleeve (45) is connected with the connecting piece (38) in a shaft mode, one end of the rod body (44) is connected with the tube tail clamping rotating assembly (7) through threads, two second nuts (46) are screwed at two ends of the rod body (44) respectively, and the two second nuts (46) respectively abut against the rod sleeve (45) and the tube tail clamping rotating assembly (7).
7. The device for positioning and producing an outer tube column casing of an automobile steering gear according to claim 1, wherein the tail clamping and rotating assembly (7) further comprises:
the support platform (47), the base (4) is provided with a sliding rail (48) for connecting the support platform (47), and the bottom of the support platform (47) is connected with the sliding rail (48) through a plurality of sliding blocks (49);
the sliding table (50) is movably arranged at the top of the supporting platform (47), a wedge-shaped sliding strip (51) used for connecting the sliding table (50) is arranged at the top of the sliding table (50), and the wedge-shaped sliding strip (51) is consistent with the length direction of the sliding rail (48);
the second air cylinder (52) is horizontally fixedly arranged at the top of one end, far away from the connecting rod (13), of the supporting platform (47), and an output shaft of the second air cylinder (52) is fixedly connected with the sliding table (50);
the rotating mechanism is fixedly arranged on the sliding table (50), and the claw disc (9) is connected with the rotating output end of the rotating mechanism.
8. The apparatus for positioning and producing an outer column casing of an automotive steering gear according to claim 7, wherein the rotating mechanism comprises:
the motor (53) is horizontally arranged and fixedly arranged on the sliding table (50) through a vertical seat (54);
the shaft seat (55) is fixedly arranged on the sliding table (50), a concentric shaft (56) is formed on the back side of the claw disc (9), and the concentric shaft (56) is connected with the shaft seat (55);
wherein, the distal end of concentric shaft (56) and the output shaft of motor (53) are all linked firmly on synchronizing wheel (58) that links to each other through hold-in range (57).
9. An outer tube column casing positioning production device for an automobile steering gear according to claim 1, wherein a pressing cylinder (59) for pressing the outer tube column casing (1) of the steering gear onto the tube column support (6) is fixedly arranged beside each tube column support (6).
10. A production method based on the automobile steering gear outer tube column casing positioning production device as claimed in claim 2, which is characterized by comprising the following steps:
s1: before machining, positioning and calibrating B-plane machining are carried out, an outer tube column casing (1) of the steering gear is placed on two tube column holders (6), in the process, an outer tube bracket (2) is placed between a pressing rod and a positioning pin of a second clamping mechanism (12), then the outer tube column casing (1) of the steering gear is pushed towards a cylinder end holder (14) by holding, in the process, the outer tube column casing (1) of the steering gear is manually rotated, so that a positioning hole (3) at the end part of the outer tube bracket (2) can be just sleeved on the positioning pin of the second clamping mechanism (12), and the second clamping mechanism (12) is started to clamp the outer tube bracket (2);
s2: when the second clamping mechanism (12) clamps the outer tube bracket (2), the eccentric cam (17) is rotated to be adjusted to a state of abutting against the edge of the outer tube bracket (2), then the eccentric cam (17) is locked to lock the current state of the eccentric cam (17), and then the second clamping mechanism (12) is loosened to finish the positioning and calibrating process of B-surface machining;
s3: the method comprises the following steps of batch production, placing an outer tube column casing (1) of the steering gear on two tube column supports (6) through a mechanical arm, adjusting the orientation of the outer tube column casing (1) of the steering gear through the mechanical arm, enabling an outer tube support (2) of the outer tube column casing to be overlapped on a support column (16) of a first clamping assembly, enabling an A face of the outer tube column casing (1) of the steering gear to face upwards, enabling a first clamping mechanism (11) to act to clamp the outer tube support (2), pulling a tube tail clamping rotating assembly (7) to be close to a tube tail of the outer tube column casing (1) of the steering gear through a connecting rod (13) in the clamping process of the first clamping mechanism (11), and enabling the tube tail clamping rotating assembly (7) to extend out of a claw disc (9) to be sleeved in a groove at the tail of the outer tube column casing (1) of the steering gear;
s4: the drilling of the A face of the outer tube column casing (1) of the steering gear is sequentially completed through the tapping mechanical arm (5);
s5: the first clamping mechanism (11) loosens the outer tube bracket (2), the connecting rod (13) pushes the tube tail clamping rotating assembly (7) in the process, meanwhile, the pushing plate (15) also transversely withdraws the outer tube bracket (2) from the first clamping mechanism (11), then the tube tail clamping rotating assembly (7) drives the claw disc (9) to rotate, the claw disc (9) drives the steering gear outer tube column casing (1) to rotate, until the outer tube bracket (2) stops rotating when contacting the eccentric cam (17), and the second clamping mechanism (12) acts to clamp the outer tube bracket (2) again;
s6: b-side drilling of the outer tube column casing (1) of the steering gear is sequentially completed through the tapping mechanical arm (5);
s7: the second clamping assembly loosens the outer tube bracket (2), then the tube tail clamping rotating assembly (7) drives the claw disc (9) to withdraw from the tail of the outer tube column casing (1) of the steering gear, and after the machined outer tube column casing (1) of the steering gear is taken away by the mechanical arm, the next machining cycle is repeated.
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| CN202211436769.9A CN115673438B (en) | 2022-11-16 | 2022-11-16 | Positioning production device and method for outer tube column casing of automobile steering gear |
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| CN202211436769.9A CN115673438B (en) | 2022-11-16 | 2022-11-16 | Positioning production device and method for outer tube column casing of automobile steering gear |
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| CN115673438B true CN115673438B (en) | 2023-07-14 |
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| CN115673438A (en) | 2023-02-03 |
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