CN212458231U - Top hammer perpendicularity and symmetry measuring device - Google Patents

Abstract

The utility model discloses a device for measuring the verticality and the symmetry degree of a top hammer, which comprises a horizontal base, a square sleeve clamp, a baffle fixed on the horizontal base, a supporting rod with adjustable height and a dial indicator connected on the supporting rod; the two baffles are vertically crossed, the square sleeve fixture is a regular quadrangular prism, a truncated cone-shaped groove for fixing the hammer body at the lower part of the anvil is formed in the center of the top of the square sleeve fixture, and two adjacent side surfaces of the square sleeve fixture are abutted against the corresponding baffles; the bracing piece is fixed on horizontal base, and the percentage table probe is towards the central axis of square cover anchor clamps. The square sleeve clamp is rotated for four times to enable the two adjacent side surfaces to be sequentially abutted on the baffle, the dial indicator is used for measuring the distance each time, the deviation between the four-time measured distances can reflect whether the verticality and the symmetry degree reach the standard or not, the verticality and the symmetry degree can be measured in the hammer body machining process, the problems are found in time, the unqualified semi-finished products are prevented from entering the next machining link, the invalid machining is reduced, and the production efficiency is greatly improved.

Description

Top hammer perpendicularity and symmetry measuring device

Technical Field

The utility model relates to a product measuring equipment field especially relates to top hammer straightness and symmetry measuring device that hangs down.

Background

The lower hammer body of the hard alloy anvil is in a circular truncated cone shape, the upper part of the anvil is provided with four inclined planes and a top plane positioned in the middle of the top, the top plane and the inclined planes are working planes of the anvil, the circular truncated cone-shaped hammer body is firstly processed in the anvil production and processing process, then the inclined planes are processed, and finally the top plane is processed, whether the verticality of the circular truncated cone-shaped hammer body reaches the standard or not directly influences the processing precision of the rear inclined plane, whether the symmetry of the inclined planes has deviation or not directly influences the processing precision of the rear end face, but at present, the verticality and the symmetry can only be measured by using a three-coordinate measuring machine after the anvil is processed, at the moment, if the anvil is found to have problems through measurement, the whole part of the anvil needs to be processed and corrected. If the perpendicularity of the truncated cone-shaped hammer body and the symmetry of the inclined plane can be respectively measured in the top hammer production process, existing problems can be timely found, the machining precision of the next step is not affected, and therefore the production efficiency can be greatly improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a top hammer hangs down straightness and symmetry measuring device can effectively solve and can not carry out the problem of measuring to the straightness that hangs down on round platform shape hammer block, the symmetry on inclined plane respectively in top hammer production process.

In order to solve the technical problem, the utility model adopts the following technical scheme: the device for measuring the perpendicularity and the symmetry degree of the top hammer comprises a horizontal base, a square sleeve clamp, a baffle plate vertically fixed on the horizontal base, a supporting rod with adjustable height and a dial indicator fixedly arranged on the supporting rod; the two baffles are vertically crossed, the square sleeve fixture is a regular quadrangular prism, a truncated cone-shaped groove for fixing the hammer body at the lower part of the anvil is formed in the center of the top of the square sleeve fixture, and two adjacent side surfaces of the square sleeve fixture are respectively abutted against the corresponding baffles; the bracing piece vertical fixation is on horizontal base, and the probe of percentage table is towards the central axis of square cover anchor clamps.

Preferably, the support rod comprises a first outer rod and a first inner rod, the first outer rod is provided with a threaded hole along the length direction, the surface of the first inner rod is provided with an external thread, and the first outer rod is in threaded connection with the first inner rod. The lifting of the supporting rod can be simply and conveniently realized by screwing out or screwing in the first inner rod, so that the height of the dial indicator can be adjusted to measure the truncated cone-shaped hammer body and the inclined plane which are positioned at different horizontal heights.

Preferably, the first outer bar and the first inner bar are on the same axis along the length direction. Therefore, the support rod can be firmly and stably connected.

Preferably, the support rod comprises a second outer rod, a second inner rod and a fastening sleeve, the second outer rod is provided with a first through hole along the central axis of the length direction, and the second inner rod is arranged in the first through hole in a sliding manner; the top surface of the second outer rod is provided with a plurality of elastic pieces, the elastic pieces surround into a circle along the circumference of the top surface of the second outer rod, gaps are formed between every two adjacent elastic pieces, the gaps between every two adjacent elastic pieces are equal, and the second inner rod penetrates through a cavity surrounded by the elastic pieces; the fastening sleeve comprises a threaded part provided with a threaded hole and a fastening part connected above the threaded part, the fastening part is provided with a second through hole, the second inner rod penetrates through the threaded hole and the second through hole, and a guide inclined plane for enabling the elastic sheet to incline towards the second inner rod is arranged in the second through hole; the top end of the second outer rod is provided with an external thread matched with the thread part, and when the thread part is in threaded connection with the second outer rod, the guide inclined plane presses the elastic sheet to enable the elastic sheet to be tightly abutted against the second inner rod. The fastening sleeve and the elastic sheet are arranged, the elastic sheet is tightly abutted to the second inner rod by screwing the fastening sleeve, and the second inner rod is fixed under the action of friction force; through screwing out the fastening sleeve, the fastening sleeve slides on the second inner rod to enable the fastening sleeve to be away from the elastic sheet, the elastic sheet is in a loose state and has small acting force on the second inner rod, and the second inner rod can slide up and down along the second outer rod to adjust the height. Therefore, the lifting of the supporting rod can be simply realized.

Preferably, the elastic sheet has four pieces. If the number of the elastic pieces is small, the single elastic piece is large, so that when the fastening part presses the elastic piece to be tightly abutted against the second inner rod, parts on two sides of the elastic piece cannot contact the second inner rod, the friction force applied to the second inner rod is small, and the second inner rod is possibly unstably fixed; if the number of the elastic pieces is large, gaps are formed between the adjacent elastic pieces, the larger the number of the gaps is, the larger the occupied space is, the smaller the contact area between the elastic pieces and the second inner rod is, the smaller the friction force applied to the second inner rod is, the possibility that the second inner rod is unstable in fixation is caused, the best effect is achieved by arranging the four elastic pieces in practical application, and the convenience is brought to processing.

Compared with the prior art, the utility model discloses following beneficial effect has:

the freedom degree of the anvil in X, Y two directions can be limited by the cooperation of the horizontal base, the baffle perpendicular to the horizontal base and the square sleeve clamp abutting on the baffle. After the processing of the truncated cone-shaped hammer body is completed, the square sleeve fixture is rotated for four times to enable the two adjacent side surfaces to abut against the baffle plate one by one, the distance between the square sleeve fixture and the truncated cone-shaped hammer body is measured on the same horizontal height by using the fixed dial indicator every time, the deviation between the four times of measured distances can accurately reflect whether the verticality of the truncated cone-shaped hammer body reaches the standard or not, if the verticality of the truncated cone-shaped hammer body reaches the standard, the next step of processing is carried out, and if the verticality of the truncated cone-shaped hammer body does. After the inclined plane is machined, the height of the supporting rod is adjusted, the distance between the dial indicator and the inclined plane is measured by the method, the deviation between the distances measured for four times can accurately reflect whether the symmetry degree of the inclined plane reaches the standard or not, if the symmetry degree of the inclined plane reaches the standard, the next machining is carried out, if the symmetry degree of the inclined plane does not reach the standard, the correction is carried out in time, and the influence on the machining precision of the next machining is. The device can be used for measuring the verticality of the truncated cone-shaped hammer body and the symmetry degree of the inclined plane in the hammer body machining process, and measuring before machining on the next step, so that possible problems can be found in time, the semi-finished product which is not in line with machining precision is prevented from entering the next machining link, unnecessary invalid machining and repeated machining in the production process are avoided, and the production efficiency is greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of a hard alloy anvil;

FIG. 2 is a schematic view of the structure of the device for measuring the perpendicularity and symmetry of the anvil of the present invention;

FIG. 3 is a schematic view of a support rod according to an embodiment;

fig. 4 is a schematic structural view of the support rod when the second outer rod and the second inner rod are fixed relatively in the second embodiment;

fig. 5 is a schematic structural view of the support rod when the second outer rod and the second inner rod slide relatively in the second embodiment;

fig. 6 is a top view of the support rod in the second embodiment.

The measuring instrument comprises a top hammer 1, a circular truncated cone-shaped hammer body 11, a top surface 12, an inclined surface 13, a horizontal base 2, a square sleeve clamp 3, a baffle 4, a support rod 5, a first outer rod 51, a first inner rod 52, a second outer rod 53, a second inner rod 54, a fastening sleeve 55, a fastening part 551, a threaded part 552, an elastic sheet 56, a dial indicator 6, a circular dial 61, a measuring rod 62 and a probe 63.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The first embodiment is as follows: as shown in fig. 1, the anvil 1 includes a truncated cone-shaped anvil body 11, a slope 13 and a top surface 12, wherein the slope 13 and the top surface 12 are the working parts of the anvil. As shown in fig. 2, a device for measuring perpendicularity and symmetry of a top hammer provided in the first embodiment of the present invention includes a horizontal base 2, a square sleeve fixture 3, a baffle 4 vertically fixed on the horizontal base 2, a height-adjustable support rod 5, and a dial indicator 6 fixedly mounted on the support rod 5; the two baffles 4 are vertically intersected, the square sleeve clamp 6 is a regular quadrangular prism, a truncated cone-shaped groove for fixing a hammer body at the lower part of the top hammer 1 is formed in the center of the top of the square sleeve clamp 6, and two adjacent side surfaces of the square sleeve clamp 3 are respectively abutted against the corresponding baffles 4; the support rod 5 is vertically fixed on the horizontal base 2, and the probe of the dial indicator 6 faces the central axis of the square sleeve clamp 3. This side cover anchor clamps 3 can directly purchase or self-processing on the market, and percentage table 6 includes circle dial plate 61, measuring stick 62 and probe 63, and the adjustable length of measuring stick 62 for measure the distance of circle dial plate 61 apart from some on the top hammer 1.

In this embodiment, the structure of the support rod 5 is as shown in fig. 3, the support rod 5 includes a first outer rod 51 and a first inner rod 52, the first outer rod 51 has a threaded hole along the length direction, the surface of the first inner rod 52 has an external thread, the first outer rod 51 is connected with the first inner rod 52 by a thread, and the first outer rod 51 and the first inner rod 52 are located on the same axis along the length direction. The lifting of the support rod 5 can be simply realized by screwing out or screwing in the first inner rod 52, so that the height of the dial indicator 6 can be adjusted to measure the truncated cone-shaped hammer body 11 and the inclined plane 13 at different levels.

The operation steps of measuring the perpendicularity and the symmetry degree of the anvil 1 by using the measuring device are as follows:

after the circular table-shaped hammer body 11 is processed, the verticality of the anvil 1 is measured:

firstly, two adjacent side surfaces of a square sleeve clamp 3 are respectively abutted against two baffle plates 4, a truncated cone-shaped hammer body 11 is placed in the square sleeve clamp 3, and the truncated cone-shaped hammer body 11 is fully contacted with the square sleeve clamp 3 without leaving a gap when the truncated cone-shaped hammer body is placed in the square sleeve clamp 3;

secondly, the supporting rod 5 is adjusted to be at a proper height, and the probe 63 of the dial indicator 6 faces the central axis of the square sleeve clamp 3;

thirdly, adjusting the length of the measuring rod 62 to enable the probe 63 to touch the truncated cone-shaped hammer body 11, and measuring to obtain a distance I;

rotating the square sleeve fixture 3, sequentially enabling two adjacent side surfaces of the square sleeve fixture 3 to be respectively abutted against the corresponding baffle 4, repeating the step III, and sequentially measuring to obtain a distance II, a distance III and a distance IV;

comparing the maximum value and the minimum value of the first distance, the second distance, the third distance and the fourth distance to obtain a difference value, and if the difference value is larger than 0.02mm, processing and correcting the truncated cone-shaped hammer body 11;

sixthly, repeating the steps after processing and correction until the qualified truncated cone-shaped hammer body 11 is obtained.

The standard of the difference is determined by the specification and the model of the processed hammer body 1 and is not a fixed value.

After the round table-shaped hammer body 11 is measured to be qualified, the inclined plane 13 is processed, the symmetry degree of the back side of the anvil hammer 1 is measured after the inclined plane 13 is processed, the measuring steps are consistent with the above steps, and the height of the support rod 5 is only required to be increased to enable the height of the dial indicator 6 to reach the height of the inclined plane 13.

Example two: the difference between this embodiment and the above embodiments is that the supporting rod 5 in this embodiment adopts another structure, and the purpose of lifting the supporting rod 5 can also be achieved. As shown in fig. 4, 5 and 6, the support rod 5 provided in this embodiment includes a second outer rod 53, a second inner rod 54 and a fastening sleeve 55, wherein the second outer rod 53 is provided with a through hole along a central axis in a length direction, and the second inner rod 54 is slidably disposed in the through hole; the top surface of the second outer rod 53 is provided with a plurality of elastic pieces 56, the elastic pieces 56 surround a circle along the circumference of the top surface of the second outer rod 53, gaps are formed between adjacent elastic pieces 56, the gaps between adjacent elastic pieces 56 are equal, and the second inner rod 54 penetrates through a cavity surrounded by the elastic pieces 56; the fastening sleeve 55 comprises a threaded portion 551 provided with a threaded hole and a fastening portion 552 connected above the threaded portion 551, the fastening portion 552 is provided with a second through hole, the second inner rod 54 penetrates through the threaded hole and the second through hole, and a guide inclined plane for enabling the elastic piece 56 to incline towards the second inner rod 54 is arranged in the second through hole; the top end of the second outer rod 53 is provided with an external thread matched with the thread part 551, and when the thread part 551 is in threaded connection with the second outer rod 53, the guide inclined surface presses the elastic piece 56 to enable the elastic piece 56 to be tightly pressed on the second inner rod 54. As shown in fig. 4, the elastic piece 56 is tightly pressed against the second inner rod 54 by screwing the fastening sleeve 55, and the second inner rod 54 is fixed under the action of friction force; as shown in fig. 5, by unscrewing the fastening sleeve 55, the fastening sleeve 55 slides on the second inner rod 54 away from the elastic piece 56, the elastic piece 56 is in a loose state and has a small force on the second inner rod 54, and the second inner rod 54 can slide up and down along the second outer rod 53 to adjust the height. Thus, the lifting of the support rod 5 can be easily realized.

Preferably, four elastic pieces 56 are provided in this embodiment. If the number of the elastic pieces 56 is small, the single elastic piece 56 is large, so that when the fastening portion 552 presses the elastic piece 56 to abut against the second inner rod 54, the parts on the two sides of the elastic piece 56 cannot contact the second inner rod 54, the friction force applied to the second inner rod 54 is small, and the second inner rod 54 may be unstably fixed; if the number of the elastic pieces 56 is large, the gaps are formed between the adjacent elastic pieces 56, and the larger the number of the gaps is, the larger the occupied space is, the smaller the contact area between the elastic pieces 56 and the second inner rod 54 is, the smaller the friction force applied to the second inner rod 54 is, and the unstable fixation of the second inner rod 54 may be caused. In practical application, the four elastic pieces 56 have the best effect, and the processing is also convenient.

Based on the above-mentioned different technical features, in this embodiment, when the height of the support rod 5 is adjusted, the fastening sleeve 55 is firstly screwed out, and the fastening sleeve 55 slides on the second inner rod 54 to be away from the elastic piece 56, the elastic piece 56 is in a relaxed state and has no friction force on the second inner rod 54, and the second inner rod 54 can slide up and down along the second outer rod 53 to adjust the height. After the height is suitable, the fastening sleeve 55 is screwed to tightly press the elastic sheet 56 against the second inner rod 54, and the second inner rod 54 is fixed under the action of friction force. Thus, the lifting of the support rod 5 can be easily realized.

It can be seen from above-mentioned two embodiments, the straightness and the symmetry measuring device are measured to the straightness that hangs down of round platform shape hammer block 11, the symmetry of inclined plane 13 respectively to top hammer that this application provided in hammer block course of working, just measure before carrying out processing on next step, in time discover the problem that probably exists, avoid not being conform to the semi-manufactured goods of machining precision and get into next processing link, and then avoided unnecessary invalid processing and repeated processing in the production process, improved production efficiency greatly.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims (5)

1. Top hammer straightness and symmetry measuring device that hangs down, its characterized in that: the device comprises a horizontal base, a square sleeve clamp, a baffle vertically fixed on the horizontal base, a supporting rod with adjustable height and a dial indicator fixedly arranged on the supporting rod;

the two baffle plates are vertically intersected, the square sleeve fixture is a regular quadrangular prism, a truncated cone-shaped groove used for fixing the hammer body at the lower part of the top hammer is formed in the center of the top of the square sleeve fixture, and two adjacent side surfaces of the square sleeve fixture are respectively abutted against the corresponding baffle plates;

the supporting rod is vertically fixed on the horizontal base, and a probe of the dial indicator faces to the central axis of the square sleeve clamp.

2. The plumb bob perpendicularity and symmetry measuring apparatus as claimed in claim 1, wherein: the bracing piece includes first outer pole and first interior pole, threaded hole has been seted up along length direction to first outer pole, external screw thread has been seted up on first interior pole surface, first outer pole with first interior pole threaded connection.

3. The plumb bob perpendicularity and symmetry measuring apparatus as claimed in claim 2, wherein: the first outer rod and the first inner rod are located on the same axis along the length direction.

4. The plumb bob perpendicularity and symmetry measuring apparatus as claimed in claim 1, wherein: the supporting rod comprises a second outer rod, a second inner rod and a fastening sleeve, a first through hole is formed in the second outer rod along the central axis of the second outer rod in the length direction, and the second inner rod is arranged in the first through hole in a sliding mode;

the top surface of the second outer rod is provided with a plurality of elastic pieces, the elastic pieces surround a circle along the circumference of the top surface of the second outer rod, gaps are formed between every two adjacent elastic pieces, the gaps between every two adjacent elastic pieces are equal, and the second inner rod penetrates through a cavity surrounded by the elastic pieces;

the fastening sleeve comprises a threaded part provided with a threaded hole and a fastening part connected above the threaded part, the fastening part is provided with a second through hole, the second inner rod penetrates through the threaded hole and the second through hole, and a guide inclined plane for enabling the elastic sheet to incline towards the second inner rod is arranged in the second through hole;

the top end of the second outer rod is provided with an external thread matched with the thread part, and when the thread part is in threaded connection with the second outer rod, the guide inclined plane presses the elastic sheet to enable the elastic sheet to be tightly abutted against the second inner rod.

5. The plumb bob perpendicularity and symmetry measuring apparatus as claimed in claim 4, wherein: the elastic pieces are four pieces.

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