CN110319754B - Forging straightness gauge and application method thereof - Google Patents
Forging straightness gauge and application method thereof Download PDFInfo
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- CN110319754B CN110319754B CN201910647064.3A CN201910647064A CN110319754B CN 110319754 B CN110319754 B CN 110319754B CN 201910647064 A CN201910647064 A CN 201910647064A CN 110319754 B CN110319754 B CN 110319754B
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- 238000005242 forging Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 135
- 230000007246 mechanism Effects 0.000 claims abstract description 79
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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Abstract
The invention discloses a forging piece straightness gauge and a use method thereof, wherein the forging piece straightness gauge comprises a base, a clamping mechanism, a detection mechanism and an auxiliary supporting mechanism; the base is provided with a vertical upward supporting frame; the clamping mechanism and the detection mechanism are movably connected with the support frame from bottom to top in sequence; the auxiliary supporting mechanism is arranged on the base and is movably connected with the base; the auxiliary supporting mechanism is provided with a movable supporting arc; the detection mechanism is provided with a detection ruler and at least two groups of detection blocks; one end of the detection block is sleeved on the detection ruler, and the other end of the detection block is vertically downward. The device disclosed by the invention is simple in structure, convenient to use and good in universality, can be used for rapidly detecting the straightness of long-shaft forgings such as crankshafts with various types and sizes, and improves the working efficiency of the straightness detection of the long-shaft forgings.
Description
Technical Field
The invention belongs to the technical field of automobile part detection, and particularly relates to a forging straightness gauge and a use method thereof.
Background
In the current automobile forging detection process, many long-axis forgings involve straightness inspection. However, similar products of different types produced by most enterprises are inconsistent in appearance, size and detection requirements, and the number and distance of detected detection points are also different, so that corresponding special straightness detection tools are required to be manufactured for different products. When a new product is developed, the development progress can be influenced due to the fact that the manufacturing period of the new inspection tool is too long, meanwhile, the problems that the number of varieties of the straightness inspection tools is large, the inspection workload of the inspection tools is large, the management difficulty of the inspection tools is large, batch straightness out-of-tolerance caused by failure of the inspection tools is easy to occur, and therefore design cost, manufacturing cost, management cost and the like of enterprises are increased. Generally, when the straightness of the crankshaft is checked, the crankshaft often does not have a proper clamping mechanism, and the inconvenience is brought to the detection work of the check staff.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the forging straightness detection tool and the application method thereof, and the forging straightness detection tool is simple in structure, convenient to use and good in universality, can be used for rapidly detecting the straightness of long-axis forging such as crankshafts with various types and sizes, and improves the working efficiency of straightness detection.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A forging linearity gauge comprises a base, a clamping mechanism, a detection mechanism and an auxiliary supporting mechanism; the base is provided with a vertical upward supporting frame; the clamping mechanism and the detection mechanism are movably connected with the support frame from bottom to top in sequence; the auxiliary supporting mechanism is arranged on the base and is movably connected with the base; the auxiliary supporting mechanism is provided with a movable supporting arc; the detection mechanism is provided with a detection ruler and at least two groups of detection blocks; one end of the detection block is sleeved on the detection ruler, and the other end of the detection block is vertically downward; the clamping mechanism comprises a clamping cylinder, a lock cylinder, a thread slide block and a clamping supporting screw rod; the opening of the clamping cylinder faces to the opposite direction of the position of the supporting frame, and the rear part of the clamping cylinder is connected with a clamping supporting screw; at least four groups of through holes are formed in the side wall of the clamping cylinder, and every two groups of through holes correspond to each other; each group of through holes is penetrated with a clamping column; one end of the clamping column penetrating into the clamping cylinder is connected with a clamping head, and one end of the clamping column penetrating out of the clamping cylinder is connected with an inclined plane locking column with an inclined outer end face; the lock cylinder is sleeved on the clamping supporting screw rod and is positioned at the rear of the clamping cylinder; the opening caliber of the lock cylinder is larger than the diameter of the whole clamping cylinder and faces the clamping cylinder; the side wall of the opening of the lock cylinder is inclined inwards to form a lock arc; the cambered surface of the lock arc corresponds to the inclined surface of the inclined surface lock column; the thread slide block is in threaded connection with the clamping support screw rod and props against the rear of the lock cylinder. The support frame is used for supporting the clamping mechanism and the detection mechanism; the clamping cylinder is used for clamping the crankshaft forging to be tested, the big end of the crankshaft forging to be tested is clamped on the clamping mechanism, and the small end is supported by the movable supporting arc; the lock cylinder is used for reinforcing and locking the crankshaft forging to be tested; the cambered surface of the lock arc is opposite to the inclined plane direction of the inclined plane lock column, and the cambered surface of the lock arc is longer than the inclined plane of the inclined plane lock column.
As a further technical improvement, the clamping mechanism further comprises a movable sleeve I and a movable sleeve II; at least four groups of thread fixing holes I are respectively formed in the movable sleeve I and the movable sleeve II; a group of fastening bolts I are arranged in each group of threaded fixing holes I; the movable sleeve I is sleeved on the supporting frame; one end of the movable sleeve II is connected with the movable sleeve I, and the other end of the movable sleeve II is sleeved on the clamping supporting screw rod. The movable sleeve I ensures that the clamping mechanism can move up and down along the supporting frame; the movable sleeve II is used for fastening and supporting the clamping and supporting screw rod; the fastening bolt I on the movable sleeve I is used for clamping and fixing the movable sleeve I; the fastening bolt I on the movable sleeve II is used for fastening the clamping supporting screw rod which stretches into the movable sleeve II.
As a further technical improvement, the detection mechanism is provided with a movable sleeve III with the same structure as the movable sleeve I, and is provided with a corresponding fastening bolt; the movable sleeve III is sleeved on the supporting frame; the detection ruler is connected to the side face of the movable sleeve III; the upper half part of the detection block is provided with a sliding through hole, and the top of the detection block is provided with a thread fixing hole II; each group of threaded fixing holes II are provided with a group of fastening bolts II matched with the threaded fixing holes II; the bottom of the detection block is horizontal. The movable sleeve III is used for supporting the detection mechanism to move up and down along the support frame; the fastening bolt on the movable sleeve III is used for fastening the movable sleeve III; the detection block is sleeved into the detection ruler through the sliding through hole; the fastening bolt II penetrates through the thread fixing hole II and is used for fixing the detection block; the bottom surface of the detection block is a detection surface and is used for detecting the straightness of the crankshaft forging to be detected.
As a further technical improvement, the auxiliary supporting mechanism further comprises a bottom bracket, a sleeve column and a supporting column; the sleeve column is hollow and cylindrical and is vertically upwards arranged on the bottom support; the support column is sleeved in the sleeve column; a spring is arranged in the sleeve column; one end of the spring is connected with the top surface of the collet, and the other end of the spring props against the bottom of the support column; at least two groups of mutually corresponding thread fixing holes III are formed in the side face of the sleeve column; each group of the thread fixing holes III is provided with a group of fastening bolts III; the support arc is connected to the top end of the support column. The small end of the crankshaft forging to be tested is placed on a movable supporting arc on the auxiliary supporting mechanism, at the moment, the supporting column is pressed down, and the spring is contracted; in the clamping and adjusting process of the crankshaft forging to be tested, the supporting column is pushed upwards at the moment of the spring, so that the supporting column is kept in contact with the small end of the crankshaft forging to be tested; after the crankshaft forging to be measured is clamped and adjusted, the support column is locked through the thread fixing hole III and the fastening bolt III.
As a further technical improvement, a pulley is arranged at the bottom of the bottom bracket; a chute is formed in the base; the pulley is sleeved in the chute. The auxiliary supporting mechanism can slide on the base through the pulleys and the sliding grooves.
As a further technical improvement, the rear end of the lock cylinder is provided with a leaning hook I; the front end of the thread slider is provided with a leaning hook II; the leaning hook I is hooked with the leaning hook II. When the threaded slider moves on the clamping supporting screw rod, the lock cylinder is driven to move through the hooking connection of the leaning hook I and the leaning hook II.
As a further technical improvement, the tail end surface of the clamping supporting screw is provided with anti-skid patterns; scales are marked on the supporting frame and the detecting ruler. If a user needs to detect the straightness of the crankshaft forging to be detected at a plurality of angles, the user can hold the anti-skid area on the clamping support screw rod, and the clamping support screw rod rotates by a proper angle together with the crankshaft forging to be detected and then measures.
The application method of the invention comprises the following steps:
1) Clamping: penetrating a large head end of a crankshaft forging to be tested into the clamping cylinder, and enabling the small head frame to be arranged on a movable supporting arc of the auxiliary supporting mechanism; rotating the thread slide block, and pushing the lock cylinder to the direction of the clamping cylinder under the action of the thread; at the moment, the cambered surface of the lock arc gradually contacts with the inclined surface on the lock column, the lock column and the clamping column are extruded towards the center direction of the lock cylinder, and finally the chuck clamps the big head end of the crankshaft forging to be tested; tightening a fastening bolt I on the movable sleeve I and the movable sleeve II;
2) Positioning: selecting corresponding specification and number of detection blocks according to the crankshaft forgings to be detected with different types and sizes; sleeving the detection block into the detection ruler, wherein the bottom end of the detection block vertically faces downwards to the crankshaft forging to be detected; adjusting each detection block to a proper distance position through the scale on the detection ruler and the specification of the crankshaft forging piece to be detected; then screwing the fastening bolt II into the threaded fixing hole II until the front end surface of the fastening bolt II contacts the top surface of the detection ruler so as to ensure that each group of detection blocks are fixed tightly, and the inner wall of the sliding through hole is completely attached to the top horizontal reference surface of the detection ruler; loosening a fastening bolt on the movable sleeve III; the detection mechanism can move up and down freely along the support frame;
3) And (3) detection: the detection mechanism is moved downwards, so that the bottom of the detection block is contacted with a corresponding detection point on the crankshaft forging to be detected; taking the detection blocks which are firstly contacted with the detection points as references, visually checking or checking gaps between the other one or more detection blocks and the corresponding detection points by using a feeler gauge, wherein the maximum gap value is the straightness required to be measured; if the straightness of the crankshaft at different angles is required to be measured, the fastening bolt I on the movable sleeve II can be loosened; the anti-skid area on the clamping support screw rod is held by hand, the clamping support screw rod is rotated, at the moment, the crankshaft forging to be tested can be rotated together, and the straightness of the crankshaft forging is measured after the proper angle is reached.
Compared with the prior art, the invention has the following beneficial effects:
1. The crankshaft forging clamping device is simple in structure, reasonable in function and high in practicability, and can clamp a crankshaft forging to be tested rapidly and effectively, so that the straightness is detected by using a detection mechanism conveniently.
2. The detection mechanism is provided with a plurality of groups of detection blocks which can be assembled and disassembled at will, the detection mechanism can move up and down at will, the straightness detection can be carried out on long shaft forgings with different models and sizes, the universality is excellent, the special detection tool is not required to be developed additionally, and the production cost is reduced.
3. The support frame and the detection ruler are provided with scales, so that the moving distance of the clamping mechanism, the detection mechanism and the detection block can be accurately adjusted, and the operation is adjusted.
4. The auxiliary supporting mechanism can be used for abutting and supporting the small end of the crankshaft forging to be measured at any time when the crankshaft forging to be measured is clamped and adjusted, and is convenient for the operation of the clamping and adjusting process.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a clamping mechanism according to an embodiment of the invention.
FIG. 3 is a schematic diagram showing a detecting mechanism detecting straightness of a crankshaft forging to be detected in an embodiment of the present invention.
FIG. 4 is a three-dimensional schematic diagram of a detection block structure according to an embodiment of the invention.
Fig. 5 is a schematic structural view of an auxiliary supporting mechanism according to an embodiment of the invention.
Fig. 6 is an enlarged view of a region a according to an embodiment of the invention.
Reference numerals: the device comprises a base, a 2-clamping mechanism, a 3-detecting mechanism, a 4-auxiliary supporting mechanism, a 5-supporting frame, a 6-crankshaft forging to be tested, a 7-clamping cylinder, an 8-locking cylinder, a 9-thread slider, a 10-clamping supporting screw, an 11-clamping column, a 12-clamping head, a 13-inclined locking column, a 14-scale, a 15-locking arc, a 16-movable sleeve I, a 17-movable sleeve II, a 18-thread fixing hole I, a 19-fastening bolt I, a 20-movable sleeve III, a 21-detecting ruler, a 22-detecting block, a 23-sliding through hole, a 24-thread fixing hole II, a 25-fastening bolt II, a 26-collet, a 27-sleeve column, a 28-supporting column, a 29-spring, a 30-supporting arc, a 31-fastening bolt III, a 32-pulley, a 33-sliding chute, a 34-leaning hook I, a 35-leaning hook II and a 36-anti-skid pattern.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
As shown in fig. 1 to 6, the forging straightness gauge comprises a base 1, a clamping mechanism 2, a detection mechanism 3 and an auxiliary supporting mechanism 4; the base 1 is provided with a vertical upward supporting frame 5; the clamping mechanism 2 and the detection mechanism 3 are movably connected with the support frame 5 from bottom to top in sequence; the auxiliary supporting mechanism 4 is arranged on the base 1 and is movably connected with the base 1; the auxiliary supporting mechanism 4 is provided with a movable supporting arc 30; the detection mechanism 3 is provided with a detection ruler 21 and at least two groups of detection blocks 22; one end of the detection block 22 is sleeved on the detection ruler 21, and the other end of the detection block is vertically downward; the clamping mechanism 2 comprises a clamping cylinder 7, a lock cylinder 8, a thread slider 9 and a clamping support screw 10; the opening of the clamping cylinder 7 faces to the opposite direction of the position of the support frame 5, and the rear part of the clamping cylinder is connected with a clamping support screw 10; at least four groups of through holes are formed in the side wall of the clamping cylinder 7, and every two groups of through holes correspond to each other; each group of through holes is penetrated with a clamping column 11; one end of the clamping column 11 penetrating into the clamping cylinder 7 is connected with a clamping head 12, and one end of the clamping column penetrating out of the clamping cylinder 7 is connected with an inclined plane locking column 13 with an inclined outer end face; the lock cylinder 8 is sleeved on the clamping supporting screw rod 10 and is positioned at the rear of the clamping cylinder 7; the opening caliber of the lock cylinder 8 is larger than the diameter of the whole clamping cylinder 7 and faces the clamping cylinder 7; the side wall of the opening of the lock cylinder 8 is inclined inwards to form a lock arc 15; the cambered surface of the lock arc 15 corresponds to the inclined surface of the inclined lock column 13; the thread slide block 9 is in threaded connection with the clamping support screw 10 and props against the rear of the lock cylinder 8. The supporting frame 5 is used for supporting the clamping mechanism 2 and the detection mechanism 3; the clamping cylinder 7 is used for clamping the crankshaft forging 6 to be tested; the lock cylinder 8 is used for reinforcing and locking the crankshaft forging 6 to be tested; the cambered surface of the lock arc 15 is opposite to the inclined surface direction of the inclined lock cylinder 13, and the cambered surface of the lock arc 15 is longer than the inclined surface of the inclined lock cylinder 13.
The clamping mechanism 2 further comprises a movable sleeve I16 and a movable sleeve II 17; at least four groups of thread fixing holes I18 are respectively formed in the movable sleeve I16 and the movable sleeve II 17; a group of fastening bolts I19 are arranged in each group of threaded fixing holes I18; the movable sleeve I16 is sleeved on the support frame 5; one end of the movable sleeve II 17 is connected with the movable sleeve I16, and the other end of the movable sleeve II is sleeved on the clamping support screw 10. The movable sleeve I16 ensures that the clamping mechanism 2 can move up and down along the supporting frame 5; the movable sleeve II 17 is used for fastening and supporting the clamping and supporting screw rod 10; the fastening bolt I19 on the movable sleeve I16 is used for clamping and fixing the movable sleeve I16; the fastening bolt I19 on the movable sleeve II 17 is used for fastening the clamping support screw 10 extending into the movable sleeve II 17.
The detection mechanism 3 is provided with a movable sleeve III 20 with the same structure as the movable sleeve I16 and a corresponding fastening bolt; the movable sleeve III 20 is sleeved on the supporting frame 5; the detection ruler 21 is connected to the side face of the movable sleeve III 20; the upper half part of the detection block 22 is provided with a sliding through hole 23, and the top of the detection block is provided with a thread fixing hole II 24; each group of threaded fixing holes II 24 is provided with a group of fastening bolts II 25 matched with the threaded fixing holes II; the bottom of the detection block 22 is horizontal. The movable sleeve III 20 is used for supporting the detection mechanism 3 to move up and down along the support frame 5; the fastening bolts on the movable sleeve III 20 are used for fastening the movable sleeve III 20; the detection block 22 is sleeved into the detection ruler 21 through the sliding through hole 23; the fastening bolt II 25 penetrates through the threaded fixing hole II 24 to fix the detection block 22; the bottom surface of the detection block 22 is a detection surface for detecting the straightness of the crankshaft forging 6 to be detected.
The auxiliary supporting mechanism 4 further comprises a bottom bracket 26, a sleeve column 27 and a supporting column 28; the sleeve column 27 is hollow and cylindrical and is vertically upwards arranged on the bottom support 26; the support column 28 is sleeved in the sleeve column 27; a spring 29 is provided inside the sleeve column 27; one end of the spring 29 is connected with the top surface of the bottom bracket 26, and the other end of the spring abuts against the bottom of the supporting column 28; at least two groups of mutually corresponding thread fixing holes III are formed on the side surface of the sleeve column 27; each group of the threaded fixing holes III is provided with a group of fastening bolts III 31; the support arc 30 is attached to the top end of the support post 28. The small end of the crankshaft forging 6 to be tested is placed on a movable supporting arc on the auxiliary supporting mechanism 4, the supporting column 28 is pressed down at the moment, and the spring 29 is contracted; in the clamping and adjusting process of the crankshaft forging 6 to be tested, the supporting column 28 is upwards pushed upwards by the spring 29 at any moment, so that the supporting column 28 is kept in contact with the small end of the crankshaft forging 6 to be tested; after the crankshaft forging 6 to be measured is clamped and adjusted, the support column is locked through the thread fixing hole III and the fastening bolt III 31.
A pulley 32 is arranged at the bottom of the bottom bracket 26; a chute 33 is arranged on the base 1; the pulley 32 is nested in the chute 33. The auxiliary supporting mechanism 4 can slide on the base 1 through a pulley 32 and a chute 33.
The application method of the invention comprises the following steps:
Clamping: penetrating the big head end of the crankshaft forging 6 to be tested into the clamping cylinder 7, and enabling the small headstock to be arranged on the movable supporting arc 30 of the auxiliary supporting mechanism 4; rotating the thread slide block 9, and pushing the lock cylinder 8 to the direction of the clamping cylinder 7 by the thread slide block 9 under the action of the thread; at the moment, the cambered surface of the lock arc 15 gradually contacts with the inclined surface on the inclined surface lock column 13, and extrudes the inclined surface lock column 13 and the clamping column 11 towards the center direction of the lock cylinder 8, so that the chuck 12 finally clamps the big head end of the crankshaft forging 6 to be tested; tightening a fastening bolt I19 on the movable sleeve I16 and the movable sleeve II 17; positioning: selecting corresponding specification and number of detection blocks 22 according to the crankshaft forgings 6 to be detected with different types and sizes; sleeving the detection block 22 into the detection ruler 21; each detection block 22 is adjusted to a proper distance position through the scale on the detection ruler 21 and the specification of the crankshaft forging piece 6 to be detected; then screwing the fastening bolt II 25 into the threaded fixing hole II 24 until the front end surface of the fastening bolt II 25 contacts the top surface of the detection ruler 21 so as to ensure that each group of detection blocks 22 are fixed tightly, and the inner wall of the sliding through hole 23 is completely attached to the top horizontal reference surface of the detection ruler 21; loosening a fastening bolt on the movable sleeve III 20; the detection mechanism 3 can move up and down freely along the support 5; and (3) detection: the detection mechanism 3 is moved downwards, so that the bottom of the detection block 22 is contacted with a corresponding detection point on the crankshaft forging 6 to be detected; the method comprises the steps of taking the two detection blocks 22 which firstly contact with detection points as references, visually checking or checking gaps between the other one or more detection blocks 22 and the corresponding detection points by using a feeler gauge, wherein the maximum gap value is the straightness required to be measured; if the straightness of the crankshaft at different angles is required to be measured, the fastening bolt I19 on the movable sleeve II 17 can be loosened; the anti-skid pattern 36 area on the clamping support screw 10 is held by hand, the clamping support screw 10 is rotated, at the moment, the crankshaft forging 6 to be tested can be rotated together, and the straightness of the crankshaft forging is measured after the proper angle is reached.
Example 2:
this embodiment differs from embodiment 1 in that: the rear end of the lock cylinder 8 is provided with a leaning hook I34; the front end of the thread slider 9 is provided with a leaning hook II 35; the leaning hook I34 is hooked with the leaning hook II 35. When the threaded slider 9 moves on the clamping support screw 10, the lock cylinder 8 is driven to move through the hook connection of the leaning hook I34 and the leaning hook II 35.
The method of use of this example is the same as that of example 1.
Example 3:
This embodiment differs from embodiment 2 in that: the tail end surface of the clamping support screw 10 is provided with anti-skid patterns 36; the support 5 and the measuring scale 21 are marked with scales 14. If the user needs to detect the straightness of the crankshaft forging 6 to be detected at a plurality of angles, the user can hold the anti-skid pattern 36 area on the clamping support screw 10, and measure the clamping support screw 10 with the crankshaft forging 6 to be detected rotating at a proper angle.
The method of use of this example is the same as that of example 1.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A forging linearity gauge comprises a base (1), a clamping mechanism (2), a detection mechanism (3) and an auxiliary supporting mechanism (4); the method is characterized in that: a vertical upward supporting frame (5) is arranged on the base (1); the clamping mechanism (2) and the detection mechanism (3) are movably connected with the support frame (5) from bottom to top in sequence; the auxiliary supporting mechanism (4) is arranged on the base (1) and is movably connected with the base (1); the auxiliary supporting mechanism (4) is provided with a movable supporting arc (30); the detection mechanism (3) is provided with a detection ruler (21) and at least two groups of detection blocks (22); one end of the detection block (22) is sleeved on the detection ruler (21), and the other end of the detection block is vertically downward;
The clamping mechanism (2) comprises a clamping cylinder (7), a lock cylinder (8), a thread slider (9) and a clamping supporting screw (10); the opening of the clamping cylinder (7) faces to the opposite direction of the position of the supporting frame (5), and the rear part of the clamping cylinder is connected with a clamping supporting screw (10); at least four groups of through holes are formed in the side wall of the clamping cylinder (7), and every two groups of through holes correspond to each other; each group of through holes is penetrated with a clamping column (11); one end of the clamping column (11) penetrating into the clamping cylinder (7) is connected with a clamping head (12), and the other end penetrating out of the clamping cylinder (7) is connected with an inclined plane locking column (13) with an inclined outer end face; the lock cylinder (8) is sleeved on the clamping supporting screw rod (10) and is positioned at the rear of the clamping cylinder (7); the opening caliber of the lock cylinder (8) is larger than the diameter of the whole clamping cylinder (7) and faces the clamping cylinder (7); the side wall of the opening of the lock cylinder (8) is inclined inwards to form a lock arc (15); the cambered surface of the lock arc (15) corresponds to the inclined surface of the inclined lock column (13); the thread slide block (9) is in threaded connection with the clamping supporting screw (10) and props against the rear of the lock cylinder (8);
The clamping mechanism (2) further comprises a movable sleeve I (16) and a movable sleeve II (17); at least four groups of thread fixing holes I (18) are respectively formed in the movable sleeve I (16) and the movable sleeve II (17); a group of fastening bolts I (19) are arranged in each group of threaded fixing holes I (18); the movable sleeve I (16) is sleeved on the supporting frame (5); one end of the movable sleeve II (17) is connected with the movable sleeve I (16), and the other end of the movable sleeve II is sleeved on the clamping supporting screw rod (10);
The detection mechanism (3) is provided with a movable sleeve III (20) with the same structure as the movable sleeve I (16), and is provided with a corresponding fastening bolt; the movable sleeve III (20) is sleeved on the supporting frame (5); the detection ruler (21) is connected to the side face of the movable sleeve III (20); the upper half part of the detection block (22) is provided with a sliding through hole (23), and the top of the detection block is provided with a thread fixing hole II (24); each group of threaded fixing holes II (24) is provided with a group of fastening bolts II (25) matched with the threaded fixing holes II; -the bottom of the detection block (22) is level;
The auxiliary supporting mechanism (4) further comprises a bottom bracket (26), a sleeve column (27) and a supporting column (28); the sleeve column (27) is hollow and cylindrical and is vertically upwards arranged on the bottom support (26); the support column (28) is sleeved in the sleeve column (27); a spring (29) is arranged in the sleeve column (27); one end of the spring (29) is connected with the top surface of the bottom bracket (26), and the other end of the spring props against the bottom of the supporting column (28); at least two groups of mutually corresponding thread fixing holes III are formed on the side surface of the sleeve column (27); each group of the threaded fixing holes III is provided with a group of fastening bolts III (31); the support arc (30) is connected to the top end of the support column (28).
2. The forging straightness gauge as set forth in claim 1, wherein: a pulley (32) is arranged at the bottom of the bottom bracket (26); a chute (33) is arranged on the base (1); the pulley (32) is sleeved in the chute (33).
3. The forging straightness gauge as set forth in claim 1, wherein: the rear end of the lock cylinder (8) is provided with a leaning hook I (34); the front end of the thread slider (9) is provided with a leaning hook II (35); the leaning hook I (34) is hooked with the leaning hook II (35).
4. The forging straightness gauge as set forth in claim 1, wherein: the tail end surface of the clamping supporting screw rod (10) is provided with anti-skid patterns (36); scales (14) are marked on the support frame (5) and the detection ruler (21).
5. A method of using the forging linearity gauge as set forth in any one of claims 1 to 4, wherein: the method comprises the following steps:
1) Clamping: penetrating the big end of the crankshaft forging (6) to be tested into a clamping cylinder (7), and supporting the small end on a movable supporting arc (30) of an auxiliary supporting mechanism (4); rotating the thread slide block (9), and pushing the lock cylinder (8) to the direction of the clamping cylinder (7) by the thread slide block (9) under the action of the thread; at the moment, the cambered surface of the lock arc (15) gradually contacts with the inclined surface on the inclined surface lock column (13), the inclined surface lock column (13) and the clamping column (11) are extruded towards the center direction of the lock cylinder (8), and finally the chuck (12) clamps the big head end of the crankshaft forging (6) to be tested; tightening a fastening bolt I (19) on the movable sleeve I (16) and the movable sleeve II (17);
2) Positioning: selecting detection blocks (22) with corresponding specifications and numbers according to the crankshaft forgings (6) to be detected with different types and sizes; sleeving a detection block (22) into a detection ruler (21), and enabling the bottom end of the detection block (22) to vertically face downwards to face a crankshaft forging (6) to be detected; the detection blocks (22) are adjusted to proper distance positions through scales on the detection ruler (21) and specifications of the crankshaft forging piece (6) to be detected; then screwing the fastening bolt II (25) into the threaded fixing hole II (24) until the front end surface of the fastening bolt II (25) contacts the top surface of the detection ruler (21) so as to ensure that each group of detection blocks (22) are fixed tightly, and the inner wall of the sliding through hole (23) is completely attached to the top horizontal reference surface of the detection ruler (21); loosening a fastening bolt on the movable sleeve III (20) to obtain a fastening bolt I; the detection mechanism (3) can move up and down freely along the support frame (5);
3) And (3) detection: the detection mechanism (3) is moved downwards, so that the bottom of the detection block (22) is contacted with a corresponding detection point on the crankshaft forging (6) to be detected; the method comprises the steps of taking two detection blocks (22) which firstly contact with detection points as references, visually checking or checking gaps between the other one or more detection blocks (22) and the corresponding detection points by using a feeler gauge, wherein the maximum gap value is the straightness required to be measured; if the straightness of the crankshaft at different angles is required to be measured, a fastening bolt I (19) on the movable sleeve II (17) can be loosened; the clamping support screw (10) is held by hand and clamped in the anti-skid pattern (36) area on the support screw (10), and the support screw (10) is rotated, so that the crankshaft forging (6) to be tested can be rotated together, and the straightness of the crankshaft forging is measured after a proper angle is reached.
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