Symmetry measuring tool for straight groove and arc groove

Abstract

The utility model belongs to the technical field of automobile part detection, and relates to a straight groove and arc groove symmetry measuring tool, which comprises a pull rod, a positioning rod, a connecting block, a left supporting block, a base, a locking screw, a fixed seat, a guide rod, a dial indicator, a gauge stand, a right supporting block and a workpiece, the fixing seat is fixedly installed on the base through screws, the two connecting blocks are connected with the right supporting block and the pull rod through screws respectively to form a frame, each connecting block is further provided with a groove, the left supporting block is arranged in the frame through a locking screw, and the locking screw is arranged in the groove of the connecting block. A workpiece is placed on the left supporting block and the right supporting block; the base is also provided with a gauge stand, and the dial gauge is installed on the gauge stand. The device is simple and convenient to use, and is suitable for being used on a batch production site; the detection precision of the measuring tool is high and reaches 0.01 mm; measuring tool manufacturing cost and detection cost are low; meanwhile, the device is suitable for measuring all support products with similar structures, and is high in universality.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts detection and relates to a symmetrical measuring tool for straight grooves and circular arc grooves. Background Art

[0002] The bracket is a key part of the automobile brake. The part is designed with two straight grooves of the same size to accommodate the brake pad and guide it during braking. An arc groove is designed in a direction perpendicular to the straight groove to accommodate the brake disc. The arc groove and the straight groove have symmetry size requirements. If the size is out of tolerance, it will cause interference between the bracket and the brake disc, affecting braking.

[0003] Since the symmetry is required in space, it cannot be directly measured using traditional methods. Usually a three-coordinate measuring instrument is needed, which requires large investment in testing equipment and high testing costs. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a straight groove and arc groove symmetry measuring tool, which makes the detection method simple, the detection efficiency high, and the detection result reliable.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a symmetrical measuring tool for straight grooves and circular arc grooves, comprising a pull rod, a positioning rod, a connecting block, a left supporting block, a base, a locking screw, a fixed seat, a guide rod, a dial indicator, a dial base, a right supporting block and a workpiece; the fixed seat is fixedly mounted on the base by screws, two connecting blocks are provided, and are respectively connected to the right supporting block and the pull rod by screws to form a frame, each connecting block is also provided with a groove, the left supporting block is arranged in the frame by a locking screw, and the locking screw is arranged in the groove of the connecting block, and the workpiece is placed on the left supporting block and the right supporting block; a dial base is also installed on the base, and the dial indicator is installed on the dial base.

[0006] Optionally, the positioning rod is provided with a groove structure, which is adjustably arranged on the fixing seat up and down and is locked by a locking screw.

[0007] Optionally, one end of the guide rod is fixed on the fixing seat by means of a thread, and the other end is inserted into the groove of the connecting block to play a guiding role.

[0008] Optionally, the guide rod is installed at a position lower than the positioning rod.

[0009] Optionally, a linear groove is designed on the table base, and its position is adjusted left and right and fixed by a locking screw.

[0010] Optionally, the contact point between the positioning rod and the arc groove of the workpiece is an arc surface.

[0011] The beneficial effects of the utility model are as follows: the utility model is a symmetrical measuring tool for straight grooves and arc grooves, which is simple and convenient to use and suitable for use on-site batch production; the measuring tool has high detection accuracy, reaching 0.01mm; the manufacturing cost and detection cost of the measuring tool are low; at the same time, it is suitable for measuring all similar structural support products and has strong versatility.

[0012] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the reverse shaft side of the utility model;

[0016] Figure 3 The front view and side view of the utility model, wherein Figure a is the front view and Figure b is the side view;

[0017] Figure 4 It is the BB view of Figure b;

[0018] Figure 5 It is a schematic diagram of the detection elements of the utility model, wherein Figure c is a side view of the workpiece, and Figure d is a sectional view of cc of Figure c;

[0019] Figure 6 This is a schematic diagram of the forward installation detection of a workpiece of the utility model;

[0020] Figure 7 This is a schematic diagram of reverse installation detection of a workpiece of the utility model;

[0021] Figure 8 It is a schematic diagram of the structure of the movable part of the utility model;

[0022] Fig. 9 It is a schematic structural diagram of the fixed part of the utility model.

[0023] Reference numerals: 1-pull rod, 2-positioning rod, 3-connecting block, 4-left supporting block, 5-base, 6-locking screw, 7-fixing base, 8-guide rod, 9-dial indicator, 10-meter base, 11-right supporting block, 12-workpiece;

[0024] Among them, R is the radius of the positioning rod detection point; A1 is the distance from the workpiece detection point to the end face of the linear groove; A2 is the width of the workpiece linear groove; A3 is the symmetry size of the workpiece linear groove width and the arc groove; A4 is the radius of the workpiece arc groove; B1 is the dial indicator probe; B2 is the workpiece size; A1 is the measured end face; B3 is the linear groove of the base. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] See also Figures 1 to 9 , which is a straight groove and arc groove symmetrical measuring tool, including a pull rod 1, a positioning rod 2, a connecting block 3, a left supporting block 4, a base 5, a locking screw 6, a fixing seat 7, a guide rod 8, a dial indicator 9, a table base 10, a right supporting block 11 and a workpiece 12;

[0029] like Fig. 9As shown, in this embodiment, the fixing seat 7 is fixed to the base 5 by screws, and the positioning rod 2 has a groove structure, which cooperates with the fixing seat 7 and can move up and down along the fixing seat 7 and is locked by a locking screw;

[0030] In this embodiment, one end of the guide rod 8 is installed on the fixing seat 7 through a thread, and the other end is inserted into the groove of the connecting block 2 to play a guiding role. The installation position of the guide rod 8 is lower than the positioning rod;

[0031] like Figure 4 and Figure 8 As shown, in this embodiment, two connecting blocks 3 and right supporting block 11, left supporting block 4, and pull rod 1 are connected by screws to form a frame, and the frame is placed on base 5 and can move left and right. A groove is also provided on each connecting block 3. Left supporting block 4 is arranged in the frame by locking screw 6, and the locking screw is arranged in the groove of connecting block 3. Workpiece 12 is placed on left supporting block 4 and right supporting block 11; when measuring, the workpiece size A1 is made to compress dial gauge head B1 by the measured end face B2, so as to obtain the detection value A1, and the distance between left supporting block 4 and right supporting block 11 can be adjusted according to the width of different products to be measured;

[0032] like Figure 1 As shown, in this embodiment, the dial indicator 9 is mounted on a meter base 10, the meter base 10 has a linear groove B3, can move left and right, and is fixed to the base 5 by a locking screw;

[0033] like Figure 5 As shown, A2 is the width of the workpiece linear groove, A4 is the radius of the workpiece arc groove, and A3 is the symmetry of the workpiece linear groove width and arc groove, which are the detection elements of this measuring tool;

[0034] like Figure 4 As shown, R is the detection point radius of the positioning rod 2, and is smaller than the radius of the arc surface of the workpiece, ensuring that the contact point between the positioning rod and the arc surface of the workpiece is a line contact to ensure measurement accuracy; A1 is the distance from the detection point of the workpiece to the end face of the linear groove;

[0035] like Figure 6 , Figure 7 As shown, install the parts in the forward and reverse directions, and the difference in the A1 values ​​is the test result;

[0036] When the utility model is used, the following steps are included:

[0037] Step 1: Press Figure 1 As shown, adjust the distance between the left support block 4 and the right support block 11 to be the same as the measured linear groove distance A2 of the workpiece 12, tighten the locking screw, and press Figure 6 As shown, place the workpiece on the left and right support blocks;

[0038] Step 2: Adjust the position of the positioning rod 2 in the up and down direction so that the detection point of the positioning rod 2 contacts the arc groove of the workpiece, and tighten the locking screw;

[0039] Step 3: Adjust the position of the dial base 10 in the left and right directions, use the dial gauge probe B1 to contact the measured end face of the workpiece size A1, and ensure that the dial gauge pre-compression amount is about 1mm;

[0040] Step 4: Read the actual value A1.1 of the dial indicator;

[0041] Step 5: Press Figure 7 Install the workpiece in the reverse direction as shown, and read the actual value A1.2 on the dial indicator;

[0042] Step 6: (A1.1-A1.2) is the test result value.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A straight groove and arc groove symmetry measuring tool, characterized in that: It includes a pull rod, a positioning rod, a connecting block, a left supporting block, a base, a locking screw, a fixing seat, a guide rod, a dial indicator, a dial seat, a right supporting block and a workpiece; the fixing seat is fixed on the base by screws, two connecting blocks are provided, and are respectively connected with the right supporting block and the pull rod by screws to form a frame, each connecting block is also provided with a groove, the left supporting block is arranged in the frame by a locking screw, and the locking screw is arranged in the groove of the connecting block, and the workpiece is placed on the left supporting block and the right supporting block; A dial base is also installed on the base, and a dial indicator is installed on the dial base.

2. A straight groove and arc groove symmetry measuring tool according to claim 1, characterized in that: The positioning rod is provided with a groove structure, which is adjustably arranged on the fixing seat up and down and is locked by a locking screw.

3. A straight groove and arc groove symmetry measuring tool according to claim 1, characterized in that: One end of the guide rod is fixed on the fixing seat through a thread, and the other end is inserted into the groove of the connecting block to play a guiding role.

4. A straight groove and arc groove symmetry measuring tool according to claim 1, characterized in that: The guide rod is installed lower than the positioning rod.

5. A straight groove and arc groove symmetry measuring tool according to claim 1, characterized in that: A straight groove is designed on the table base, and its position can be adjusted left and right and fixed by locking screws.

6. A straight groove and arc groove symmetry measuring tool according to claim 1, characterized in that: The contact point between the positioning rod and the arc groove of the workpiece is an arc surface.

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